Lembar kerja Biologi untuk ujian masuk keperawatan dengan jawaban

Which gas do plants take in from the air for photosynthesis?

1. ANitrogen
2. BCarbon dioxide
3. CHydrogen
4. DOxygen

What are homologous chromosomes?

1. AChromosomes that are found only in gametes
2. BTwo chromosomes that are always the X and the Y
3. CTwo identical copies of one chromosome made when DNA is replicated
4. DA matching pair, one from each parent, that carry the same genes

Which enzyme unwinds the DNA double helix and separates the two strands for copying?

1. ALigase
2. BAmylase
3. CLipase
4. DHelicase

There are 64 possible codons but only about 20 amino acids. What does this tell you about the genetic code?

1. AMost amino acids are coded for by more than one codon
2. BOnly 20 of the codons are ever used
3. CEach amino acid has exactly three codons
4. DEach codon codes for more than one amino acid at the same time

Why do many plants close their stomata on hot, dry days?

1. ATo speed up photosynthesis
2. BTo release more oxygen
3. CTo reduce water loss
4. DTo take in more carbon dioxide

Pernyataan mana yang menggambarkan transpor aktif?

1. AMemakai energi untuk memindahkan zat melawan gradien konsentrasi
2. BHanya memindahkan air melalui membran
3. CMemindahkan zat menurut gradien konsentrasinya tanpa memakai energi apa pun
4. DHanya terjadi pada sel mati

A leaf with green and white areas is kept in light and then tested with iodine. Only the green areas turn blue-black. What does this show?

1. ALight is not needed for photosynthesis
2. BIodine destroys chlorophyll in the leaf
3. CWhite areas store more starch than green areas
4. DChlorophyll is needed for photosynthesis

In Tay-Sachs disease, a lysosomal enzyme does not work. What happens inside the affected nerve cells?

1. AThe cells can no longer make ATP in their mitochondria
2. BThe ribosomes stop making proteins
3. CThe undigested substance builds up inside lysosomes
4. DThe DNA cannot be copied before division